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3 years ago

Need help with this answer

Mathematics

2 answers:

Scorpion4ik [409]3 years ago

8 0

Answer:

B, C

Step-by-step explanation:

B is the answer, and C is equivalent.

Hope This Helped!

stira [4]3 years ago

8 0

Answer: so go with 1 and 4

Step-by-step explanation:

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DanielleElmas [232]

Answer: j-7

Step-by-step explanation:

So Jayson is J

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3 years ago

1.5x-6=9 what is the number for x

Svet_ta [14]

Answer:

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Step-by-step explanation:

1.5x-6=9

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4 years ago

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Solve the system of equations.

guajiro [1.7K]

Answer:

<u>Option b. (x = 3, y = 20, z = -14)</u>

Step-by-step explanation:

Given:

2x + 2y + 3z = 4

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3x + 4y + 6z = 5

Solve using Cramer’s rule

∴ $\left[\begin{array}{ccc}2&2&3\\5&3&5\\3&4&6\end{array}\right] =\left[\begin{array}{ccc}4\\5\\5\end{array}\right]$

∴A = $\left[\begin{array}{ccc}2&2&3\\5&3&5\\3&4&6\end{array}\right] = -1$

Ax = $\left[\begin{array}{ccc}4&2&3\\5&3&5\\5&4&6\end{array}\right] = -3$

Ay = $\left[\begin{array}{ccc}2&4&3\\5&5&5\\3&5&6\end{array}\right] =-20\\$

Az = $\left[\begin{array}{ccc}2&2&4\\5&3&5\\3&4&5\end{array}\right] = 14$

∴ x = Ax/A = -3/-1 = 3

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z = Az/A = 14/-1 = -14

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4 years ago

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Aleks [24]

Answer:

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Step-by-step explanation:

93 5th graders bought shirts, 156 6th graders bought shirts, 51 teachers bought shirts

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3 years ago

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Talja [164]

1800x = 20 is the equation

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